Netherlands boss Ronald Koeman has urged Justin Kluivert to reject the advances of Manchester United for the good of his career.

The 18-year-old is attracting interest from Old Trafford after an impressive start to his fledgling career with Ajax.

Winger Kluivert, son of former Barcelona star Patrick, has 10 goals in 50 games for Ajax so far, including eight strikes in 39 outings this term.

Koeman has revealed the youngster is in discussions with Ajax over signing a contract extension, and the former Everton and Southampton boss believes he should stay in the Netherlands to help his development.

Kluivert is on United's radar (Image: Getty Images)

Koeman has urged Kluivert to stay put at Ajax (Image: Getty Images)

"I spoke to him about this," Koeman said. "He's in talks with Ajax about his contract.